Overview EDA/GSR (Electrodermal Activity) Shimmer3 GSR+

Shimmer3 GSR+

The Shimmer3 GSR+ (Galvanic Skin Response) monitors skin conductivity between two reusable electrodes attached to two fingers of one hand. Caused by a stimulus the sweat glands become more active, increasing moisture on the skin and allowing the current to flow more readily by changing the balance of positive and negative ions in the secreted fluid (increasing skin conductance).

The Shimmer3 GSR+ unit can also provide a photoplethysmogram (PPG) signal from a finger, ear-lobe, or other location on the body when adding an Optical Pulse probe.

Shimmer is a widely used and trusted product with a long publication history. Find white papers, research papers and more here: https://shimmersensing.com/support/publications/


Model Shimmer3 GSR
Number of Channels Channel GSR (Analog)
Measurement range 10k-4.7MΩ (.2uS – 100uS) +/- 10%. 22k-680kΩ (1.5-45uS) +/- 3%
Frequency range DC-15.9Hz
Input protection RF/EMI filtering, Current limiting
Inputs 2 x Hospital-Grade 1mm Touchproof IEC/EN 60601-1 DIN42-802 jacks
Auxiliary input 2 Channel Analog input via a 3.5mm 4-position jack (input voltage range = 0..3.0V)
Recommended Bluetooth Adapter Kensington K33956AM USB 2.0 Bluetooth 4.0 (be sure to disable your machine’s internal bluetooth)

EDA/GSR (Electrodermal Activity)

Measure skin conductivity to indicate emotional arousal and stress.

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